Home / 143,730.75-215,374.34-91,029.52

Finding the Fourth Proportional to 143,730.75, 215,374.34 and 91,029.52

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Solution

The fourth proportional to 143,730.75, 215,374.34 and 91,029.52 is: 136,403.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,730.75 : 215,374.34 = 91,029.52 : x
  2. Step 2: Convert to fraction form
    143,730.75/215,374.34 = 91,029.52/x
  3. Step 3: Cross multiply
    143,730.75x = 215,374.34 × 91,029.52
  4. Step 4: Simplify right side
    143,730.75x = 19,605,423,287.31
  5. Step 5: Solve for x
    x = 19,605,423,287.31/143,730.75
  6. Step 6: Final answer
    x = 136,403.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.